Family Doesn’t Approve... Advice?

So I’m white— my dad is Croatian, mom is Polish. And my bf is Qatari, Muslim, Arab. We dated for a year before splitting up (long story short we both just needed to grow up and be our own people for a while) and abt 6 months ago got back together.

But so now that we’re back together and the relationship is getting more serious both of our families have started to have serious issues. My dad doesn’t like me dating anyone who isn’t Slavic and is worried about cultural roles etc, and my mom is just low key racist just like her brothers and my grandparents. I don’t worry so much about my dad, it I’m so worried abt how my moms family will treat my bf if they ever meet him.

Meanwhile my bfs mom has said gross things like “your kids are gonna be mixed breed mutts.” And since he’s the oldest son in the family he’s held to very strict expectations. They always wanted him to have an arranged marriage, or at least he must marry a Qatari woman. But I’m... not. And worse still I was born and raised in America, am Christian, white, not even remotely Arab.

Does anyone have advice on dealing with unsupportive family? Is it possible to maintain those ties and not let it hold back your relationship? Is there any way his family could approve of me? Is there any way my family could ever approve of him? How have you guys dealt with judgement and criticism from family and friends?